Kaydrub Norzang-gyatso
Khedrup Norsang Gyatso (mKhas-grub Nor-bzang rgya-mtsho) (1423–1513), a well-known scholar and adept of the fifteenth century, was a student of the First Dalai Lama and a principal teacher of the Second Dalai Lama.
Though belonging to the Geluk school of Tibetan Buddhism, Norsang Gyatso is recognized as a seminal figure in the promotion of a syncretic approach—between the Geluk and Kagyü schools—to the teachings and practices of mahamudra.
Along with Phukpa Lhundrup Gyatso, Norsang Gyatso is credited also with the founding of the highly influential Phuk school of Tibetan astronomy and astrology.
Because of his dedication to intensive meditative practice for more than four decades as a wandering hermit, Norsang Gyatso came to be revered by the Tibetan tradition as a great meditator and teacher, and he is included among the lineage masters of many important practice traditions, including the lineage of Kalachakra.